Why Are Elephants and Other Animals So Wrinkly?

When you write a column called Weird Animal Question of the Week, it's inevitable that you get some smart-aleck inquiries. Recently someone asked me: "What happens when you put anti-wrinkle cream on an elephant?" Any self-respecting pachyderm would turn up its trunk at such an offer. That's because those fabulous folds help keep the big mammals cool, Kathleen Garrigan, spokesperson for the African Wildlife Foundation, said via email.Elephants have few sweat glands and can't use them for regulating their body temperature, so they disperse heat in other ways, including through their baggy skin. 

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